EP3588248B1 - Écouteurs et terminal - Google Patents

Écouteurs et terminal Download PDF

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Publication number
EP3588248B1
EP3588248B1 EP17900145.8A EP17900145A EP3588248B1 EP 3588248 B1 EP3588248 B1 EP 3588248B1 EP 17900145 A EP17900145 A EP 17900145A EP 3588248 B1 EP3588248 B1 EP 3588248B1
Authority
EP
European Patent Office
Prior art keywords
headset
circuit
sensor
voltage
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17900145.8A
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German (de)
English (en)
Other versions
EP3588248A4 (fr
EP3588248A1 (fr
Inventor
Guang HE
Xiaojin ZHU
Zhengjin ZHANG
Silong CHEN
Peitao XI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Publication of EP3588248A4 publication Critical patent/EP3588248A4/fr
Publication of EP3588248A1 publication Critical patent/EP3588248A1/fr
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Publication of EP3588248B1 publication Critical patent/EP3588248B1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H04M1/6058—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
    • H03K5/24—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/09—Applications of special connectors, e.g. USB, XLR, in loudspeakers, microphones or headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/03—Aspects of the reduction of energy consumption in hearing devices

Definitions

  • This application relates to the field of audio apparatus technologies, and in particular, to a headset, a terminal, and a control method.
  • a communication requirement of a user such as making a call can be met, and various entertainment functions such as listening to music or watching a video can also be implemented.
  • a user usually uses a headset to answer a call, listen to music, watch a video, or the like, to free hands.
  • the user can communicate only after taking off the headset.
  • a call that is being answered, music that is running, a video that is running, or the like still keeps running if the user does not manually enter a "pause” or "terminate” operation.
  • EP2990943 describes detecting the wearing state of an earphone receiver connected to the intelligent terminal device, including a wearing state and a removal state; and controlling the operation status of the applications in the intelligent terminal device and/or the operation mode of the intelligent terminal device according to the wearing state of the receiver.
  • US2017041711 describes a reproduction apparatus including a biological sensor located at an earphone to acquire biological information and a controller for controlling an output operation of a content based on an acquisition state of the biological information.
  • EP2720476 describes an apparatus for detecting an insertion of an headset into a mobile station including an headset attachment/detachment detecting circuit unit for transmitting an insertion signal or a separation signal to a controller by using a resistance value of the headset attached/detached to/from the mobile station; and a controller for, when an headset separation signal is received from the headset attachment/detachment detecting circuit unit, controlling such that an output of noise to the headset, which is not completely separated from the mobile station, is blocked by turning off a microphone bias.
  • Embodiments of this application provide a headset according to claim 1 and a terminal according to claim 12, so that it can be detected that a user wears or takes off a headset, and a terminal is controlled to perform a corresponding operation.
  • an embodiment of this application provides a headset, including a connector of the headset configured to connect to a terminal, where the connector of the headset includes at least one functional pin, the headset further includes a sensor circuit and a logic control circuit, and the sensor circuit is connected to a functional pin of the connector of the headset by using the logic control circuit; the sensor circuit is configured to: sense a wearing status of the headset, and output a trigger signal to the logic control circuit when the wearing status changes; and the logic control circuit is configured to change, based on the trigger signal, a voltage value on the functional pin connected to the logic control circuit, to trigger the terminal to perform a target operation event based on a changed voltage value on the functional pin, where the target operation event is preset for the voltage value on the functional pin.
  • the voltage on the functional pin can be changed after output of the sensor circuit passes through the logic control circuit, so that the terminal performs different operation events based on different voltage values on the functional pin.
  • the charging circuit is configured to supply power to the sensor circuit, so that the sensor can detect the wearing status of the headset, and the terminal can perform different operation events based on different wearing statuses.
  • the connector of the headset specifically includes a first functional pin and a second functional pin;
  • the headset further includes a voltage regulator, a comparator, and a first switching switch,
  • the first switching switch includes a first connection end, a second connection end, a first control end, and a first fixed end, the first control end is connected to the comparator, and the voltage regulator includes a voltage regulation input end and a voltage regulation output end;
  • the comparator includes a first voltage input end, a second voltage input end, and a comparison output end, the first voltage input end is connected to the first functional pin and is configured to input a voltage value on the first functional pin, and the second voltage input end is connected to the voltage regulation output end of the voltage regulator and is configured to input a reference voltage value;
  • the comparison output end is connected to the first control end of the first switching switch, outputs a comparison result, determines, based on the comparison result, whether the first functional pin is connected to a power supply circuit or a MIC circuit, and when determining that the first functional pin is connected
  • the first fixed end of the first switching switch is connected to the logic control circuit, the first connection end is connected to the first functional pin, and the second connection end is connected to the second functional pin.
  • a sensor signal transmission channel can be switched based on different working statuses of the terminal.
  • the headset further includes a button circuit
  • the button circuit includes a plurality of buttons and a plurality of first button resistors that are in a one-to-one correspondence with the plurality of buttons, and each button is connected to the first fixed end of the first switching switch by using a first button resistor corresponding to the button.
  • each of different buttons may correspond to one first resistor, and each first resistor has a different resistance value.
  • the voltage value on the functional pin is determined by a resistance value of the first resistor.
  • the sensor circuit includes a first sensor and a second sensor
  • the logic control circuit includes a logic controller, a transistor, and a first resistor
  • the logic controller includes a first input end, a second input end, and a logic output end, the first input end is connected to the first sensor, the second input end is connected to the second sensor, the logic output end is connected to one end of the first resistor by using the transistor, and the other end of the first resistor is connected to the first fixed end of the first switching switch.
  • a control signal can be output, and the transistor is controlled to be conducted or cut off, to change the voltage on the functional pin.
  • the connector of the headset further includes a third functional pin
  • the headset further includes a first sound transmission channel, a second sound transmission channel, and a second switching switch
  • the second switching switch includes a third connection end, a fourth connection end, a second control end, and a second fixed end
  • the second fixed connection end is connected to the first sound transmission channel
  • the third connection end is connected to the second functional pin
  • the fourth connection end is connected to the third functional pin
  • the second control end is connected to the comparison output end of the comparator; and when an output result of the comparison output end indicates that the first functional pin is connected to the power supply circuit
  • the comparison output end controls the second fixed end of the second switching switch to connect to the third connection end, or when an output result of the comparison output end indicates that the first functional pin is connected to the MIC circuit, the comparison output end controls the second fixed end of the second switching switch to connect to the fourth connection end.
  • a sound signal transmitted on the second sound transmission channel can be copied into the first sound transmission channel, to improve user experience.
  • the headset further includes a voltage switching circuit
  • the voltage switching circuit includes a switch, a first voltage divider resistor, and a second voltage divider resistor, the first voltage divider resistor and the second voltage divider resistor are connected in series, one end of the first voltage divider resistor is connected to a functional pin, the functional pin is the functional pin connected to the logic control circuit, the switch includes an input end, an enable end, and a switching output end, the input end is connected to the functional pin, the enable end is connected to the other end of the first voltage divider resistor, and the switching output end is connected to the first sensor, the second sensor, and the voltage regulation input end of the voltage regulator.
  • a voltage of a power supply provided by the terminal for the sensor circuit can be converted, to ensure that the sensor circuit stably works.
  • the headset further includes a button circuit
  • the button circuit includes a plurality of buttons, and a plurality of first button resistors and a plurality of second button resistors that are in a one-to-one correspondence with the plurality of buttons, each button is connected to the first connection end of the first switching switch by using a first button resistor corresponding to the button, each button is connected to the second connection end of the first switching switch by using a second button resistor corresponding to the button, and the first fixed end of the first switching switch is connected to the first functional pin.
  • the button resistor can be switched based on a usage status of the functional pin, to ensure that the functional pin can correctly identify a sensor signal or a button signal in any usage status.
  • the sensor circuit includes a first sensor and a second sensor
  • the logic control circuit includes a logic controller, a transistor, and a first resistor
  • the logic controller includes a first input end, a second input end, and a logic output end, the first input end is connected to the first sensor, the second input end is connected to the second sensor, the logic output end is connected to one end of the first resistor by using the transistor, and the other end of the first resistor is connected to the first connection end of the first switching switch.
  • a control signal can be output, and the transistor is controlled to be conducted or cut off, to change the voltage on the functional pin.
  • the headset further includes a voltage switching circuit
  • the voltage switching circuit includes a switch, a first voltage divider resistor, and a second voltage divider resistor, the first voltage divider resistor and the second voltage divider resistor are connected in series, one end of the first voltage divider resistor is connected to the first functional pin
  • the switch includes an input end, an enable end, and a switching output end, the input end is connected to the first functional pin, the enable end is connected to the other end of the first voltage divider resistor, and the switching output end is connected to the first sensor, the second sensor, and the voltage regulation input end of the voltage regulator.
  • a voltage of a power supply provided by the terminal for the sensor circuit can be converted, to ensure that the sensor circuit stably works.
  • the logic control circuit further includes a second resistor, the logic output end is further connected to one end of the second resistor by using the transistor, and the other end of the second resistor is connected to the second connection end of the first switching switch.
  • the functional pin can transmit a sensor signal in any usage status, and the voltage value on the functional pin is changed to control the terminal to implement a corresponding operation event.
  • the headset further includes a charging circuit, the charging circuit includes a battery and a charger, one end of the battery is connected to the charger, an input end of the charger is connected to the first functional pin, and an output end of the charger is connected to the first sensor, the second sensor, and the voltage regulation input end of the voltage regulator.
  • the charging circuit includes a battery and a charger, one end of the battery is connected to the charger, an input end of the charger is connected to the first functional pin, and an output end of the charger is connected to the first sensor, the second sensor, and the voltage regulation input end of the voltage regulator.
  • the charging circuit is configured to supply power to the sensor circuit, so that the sensor can detect the wearing status of the headset, and the terminal can perform different operation events based on different wearing statuses.
  • an embodiment of this application further provides a terminal, including a headset jack, configured to connect to a connector of a headset having a sensor circuit.
  • the connector of the headset includes at least one functional pin, and when the connector of the headset is plugged into the headset jack of the terminal, the terminal is connected to the headset by using the at least one functional pin of the connector of the headset.
  • the terminal further includes a power supply circuit, a sensor identification circuit, a third switching switch, and a MIC circuit.
  • the power supply circuit is configured to supply power to the sensor circuit in the headset; the sensor identification circuit is configured to determine whether a sensor signal is transmitted to the headset; and the third switching switch is configured to control the terminal to provide the MIC circuit or the power supply circuit for the headset.
  • the terminal can provide, by using the functional pin, the MIC circuit or the power supply circuit for the headset having the sensor, identify a voltage value on the functional pin, and perform a corresponding operation event based on different voltage values.
  • the power supply circuit is connected to the sensor identification circuit.
  • the sensor identification circuit includes a current sampling resistor, a first analog-to-digital converter, and a second analog-to-digital converter, one end of the current sampling resistor is connected to the power supply circuit, the other end of the current sampling resistor is connected to the third switching switch, and the first analog-to-digital converter and the second analog-to-digital converter are separately configured to: collect voltages at the two ends of the current sampling resistor, and calculate a current that flows through the current sampling resistor.
  • the MIC circuit includes a voltage sampling resistor, a third analog-to-digital converter, and a codec, one end of the voltage sampling resistor is connected to the third switching switch, the third analog-to-digital converter is configured to collect a voltage at the end of the voltage using resistor, and the other end of the voltage sampling resistor is connected to the codec.
  • the voltage sampling resistor can be used to identify different button signals in the MIC circuit based on a voltage value on the functional pin.
  • the sensor identification circuit further includes a third voltage divider resistor, a fourth voltage divider resistor, a fifth voltage divider resistor, and a sixth voltage divider resistor.
  • the third voltage divider resistor and the fourth voltage divider resistor are connected in series
  • the fifth voltage divider resistor and the sixth voltage divider resistor are connected in series
  • one end of the third voltage divider resistor is connected to one end of the current sampling resistor
  • one end of the fifth voltage divider resistor is connected to the other end of the current sampling resistor
  • the first analog-to-digital converter is connected to the other end of the third voltage divider resistor
  • the second analog-to-digital converter is connected to the other end of the fifth voltage divider resistor.
  • the headset having the sensor circuit includes the headset according to the ninth possible implementation of the first aspect.
  • the terminal further includes an audio circuit
  • the third switching switch includes a fifth connection end, a sixth connection end, a seventh connection end, an eighth connection end, a third control end, a fourth control end, a third fixed end, and a fourth fixed end.
  • the fifth connection end is connected to the audio circuit
  • the sixth connection end is connected to the current sampling resistor
  • the third fixed end is connected to the second functional pin
  • the third control end is configured to control the third fixed end to connect to the fifth connection end or the sixth connection end.
  • the seventh connection end is connected to the voltage sampling resistor
  • the eighth connection end is connected to the current sampling resistor
  • the fourth fixed end is connected to the first functional pin
  • the fourth control end is configured to control the fourth fixed end to connect to the seventh connection end or the eighth connection end.
  • a sensor signal transmission channel can be switched based on different working statuses of the terminal.
  • the headset having the sensor circuit includes the headset according to the twelfth or the fourteenth possible implementation of the first aspect.
  • the third switching switch includes a ninth connection end, a tenth connection end, a fifth control end, and a fifth fixed end.
  • the ninth connection end is connected to the voltage sampling resistor
  • the tenth connection end is connected to the current sampling resistor
  • the fifth fixed end is connected to the first functional pin
  • the fifth control end is configured to control the fifth fixed end to connect to the ninth connection end or the tenth connection end.
  • the terminal can be controlled to provide the MIC circuit or the power supply circuit for the headset having the sensor circuit.
  • the embodiments of this application provide the headset and the terminal.
  • the headset has the sensor, configured to sense the wearing status of the headset.
  • the control signal is output after output of the sensor is processed by the logic controller, and the transistor is controlled to be conducted or cut off, to change the voltage value on the functional pin, so that the terminal performs a corresponding operation event based on different voltage values on the functional pin.
  • a wired headset usually includes an earbud, a button, and a connector of the headset configured to connect to a terminal.
  • the connector of the headset may include a plurality of functional pins.
  • the functional pin corresponds to the button, receives, by using the button, an instruction entered by a user, and then transmits the instruction to the terminal by using a functional pin corresponding to each button, so that the terminal implements different functions based on the instruction. Therefore, different quantities of functional pins indicate different functions implemented after the headset is connected to the terminal.
  • the headset referred to as a headset with a three-conductor plug, may enable the terminal by using different buttons, to implement a function of increasing or decreasing volume.
  • the headset When the connector of the headset includes four functional pins, the headset, referred to as a headset with a four-conductor plug, may enable the terminal by using different buttons, to implement a function of increasing or decreasing volume and a call function.
  • the earbud is configured to output a sound signal transmitted by the terminal to the headset.
  • the headset When the headset is the headset with a four-conductor plug, the headset may further include a microphone.
  • the microphone is connected to a functional pin of the connector of the headset, and is configured to: collect a sound signal and transmit the sound signal to the terminal by using the functional pin, so that the terminal implements the call function.
  • the terminal connected to the headset includes but is not limited to a device that can be used in cooperation with the headset, such as a personal digital assistant (Personal Digital Assistant, PDA), a smart mobile device (including a mobile phone, a mobile computer, a tablet computer, or the like), or a virtual reality head-mounted display device.
  • a personal digital assistant Personal Digital Assistant, PDA
  • PDA Personal Digital Assistant
  • smart mobile device including a mobile phone, a mobile computer, a tablet computer, or the like
  • virtual reality head-mounted display device such as a virtual reality head-mounted display device.
  • a headset in this application may be a wired headset, and a connector of the headset may include at least one functional pin.
  • the headset in this application may further include a sensor, and at least one sensor is added to the headset.
  • the sensor may be added to an earbud of the headset.
  • the sensor may feed back detected information to a terminal by using the pin, to control the terminal to implement a corresponding function.
  • the information detected by the sensor may be but is not limited to a wearing status, environment information, motion information, or the like.
  • the wearing status means that a user wears or takes off the headset.
  • the environment information may mean a temperature, light, or the like of an environment in which the headset is located.
  • the motion information may mean a motion status when the user wears the headset.
  • a sensor in this application may be but is not limited to a temperature sensor, a photosensor, a capacitive sensor, an acceleration sensor, or the like.
  • the terminal When any one or more of the foregoing sensors detect that the user wears the headset, the terminal is controlled to automatically play music or a video, automatically turn on a music balancer, automatically answer a call, and so on.
  • the terminal When the sensor detects that the user takes off the headset, the terminal is controlled to automatically pause or stop music or a video, automatically exit a background application, turn off a music balancer, automatically hang up a call, and so on.
  • the terminal is a mobile phone.
  • a call is automatically answered when the call is detected and it is sensed that the user wears the headset.
  • a call is automatically hung up when it is sensed that the user takes off the headset.
  • music or a video is paused when the terminal detects that the user is listening to the music or watching the video by using the headset and it is sensed that the user takes off the headset, and the music or the video resumes being played when it is sensed that the user wears the headset again.
  • the terminal when the acceleration sensor detects that the user is moving, the terminal is controlled to switch a music playlist to music with a strong rhythm, or when the acceleration sensor detects that the user stops moving, the terminal is controlled to switch a music playlist back to music with a slow rhythm.
  • the photosensor detects that the light of the environment in which the headset is located is relatively dim, it is determined that the outside may be relatively quiet, and the terminal is controlled to automatically decrease volume.
  • the acceleration sensor detects that the user does not move for a long time
  • the photosensor detects that the light of the environment in which the headset is located is relatively dim
  • the temperature sensor may further detect information about the temperature of the environment in which the headset is located, and enable, based on the information about the temperature, the terminal to adjust sound quality of music that is being played.
  • the headset in this application is not limited to the wired headset, or may be a wireless headset, and at least one sensor may be added to the headset.
  • the sensor feeds back detected information to the terminal through wireless communication, to control the terminal to implement a corresponding function.
  • a type of the sensor, a location of the sensor, the information detected by the sensor, and the function implemented by the terminal are the same as those in the foregoing corresponding descriptions of the wired headset. Details are not described herein again.
  • a wired headset with a four-conductor plug is used as an example for description, and any one of the foregoing sensors is added to each of two earbuds of the headset, and is configured to: detect a wearing status of the headset, and feed back the wearing status of the headset to a terminal by using a pin of the headset, to control the terminal to implement a corresponding function.
  • FIG. 2 is a circuit diagram of a headset according to an embodiment of this application.
  • the headset may include a connector of the headset configured to connect to a terminal, and the connector of the headset includes a plurality of functional pins, for example, a left pin (L), a right pin (R), a ground pin (G), and a microphone pin (MIC).
  • the headset may further include a left earbud, a right earbud, and a microphone.
  • the microphone is configured to: collect a sound signal and transmit the sound signal to the terminal by using the MIC pin.
  • the headset may further include a sensor circuit and a logic control circuit. The sensor circuit is connected to a functional pin of the connector of the headset by using the logic control circuit.
  • the sensor circuit is configured to: sense a wearing status of the headset, and output a trigger signal to the logic control circuit when the wearing status changes.
  • the logic control circuit is configured to change, based on the trigger signal, a voltage value on the functional pin connected to the logic control circuit, to trigger the terminal to perform a target operation event based on a changed voltage value on the functional pin, where the target operation event is preset for the voltage value on the functional pin.
  • the functional pin in this embodiment may be the MIC pin.
  • the sensor circuit includes two sensors: a first sensor (Sensor 1) and a second sensor (Sensor 2) respectively disposed in the left earbud and the right earbud of the headset.
  • Each sensor has an input end (IN) and an output end (INT).
  • the input end (IN) is configured to input a signal detected by the sensor (for example, a temperature value detected by a temperature sensor).
  • the output end (INT) is configured to output a high or low level based on the input signal.
  • the sensor is a temperature sensor.
  • a reference temperature first needs to be set, and a temperature detected by the temperature sensor is compared with the reference temperature.
  • the temperature sensor detects a temperature of a human body. If the detected temperature is higher than the reference temperature, the sensor may be enabled to output a high level, and it indicates that the headset is in a worn state. If the detected temperature is not higher than the reference temperature, the sensor may be enabled to output a low level, and it indicates that the headset is in a taken-off state.
  • the sensor is a photosensor.
  • an optical signal detected by the photosensor is very weak, and the photosensor is set to output a high level.
  • an optical signal detected by the photosensor is very strong, and the photosensor is set to output a low level.
  • the sensor is a capacitive sensor.
  • a capacitance value detected by the capacitive sensor is very high, and the capacitive sensor is set to output a high level.
  • a capacitance value detected by the capacitive sensor is very low, and the capacitive sensor is set to output a low level.
  • the sensor is an acceleration sensor.
  • the acceleration sensor detects that a tilt angle of the headset relative to a horizontal plane is very small, and the acceleration sensor is set to output a high level.
  • the acceleration sensor detects that a tilt angle of the headset relative to a horizontal plane is very large, and the acceleration sensor is set to output a low level.
  • the logic control circuit includes a logic controller (Logic), a transistor, and a first resistor (R 1 ).
  • the logic controller includes a first input end, a second input end, and a logic output end. The first input end is connected to the first sensor, and the second input end is connected to the second sensor. The first input end and the second input end are separately configured to input high and low levels that are output by output ends (INT) of the two sensors. After the high and low levels are processed by the logic controller, a control signal is output, and the transistor is controlled to be conducted or cut off.
  • the logic controller may be an OR gate. When at least one sensor outputs a high level, the output end of the logic controller may output a high level, so that the transistor is conducted.
  • the transistor and the first resistor R 1 are connected in series. After the transistor is conducted, the first resistor R 1 is used to change a voltage value on the MIC pin, so that the terminal performs a corresponding operation event by using the voltage value on the MIC pin.
  • the logic controller may be set to a NAND gate. When at least one sensor outputs a low level, the output end of the logic controller may output a high level, so that the transistor is conducted.
  • the headset in FIG. 2 may further include a button circuit, the button circuit includes a plurality of buttons and a plurality of first button resistors (R 2 , R 3 , and R 4 ) that are in a one-to-one correspondence with the plurality of buttons, and each button is connected to the MIC pin by using a first button resistor corresponding to the button.
  • the button When any button is pressed, the button is connected to a first button resistor corresponding to the button, and the first button resistor corresponding to the button is used to change a voltage value on the MIC pin, so that the terminal performs a corresponding operation event by using the voltage value on the MIC pin.
  • the terminal may obtain the voltage value on the MIC pin through measurement by using an analog-to-digital converter.
  • a mapping table may be stored in the terminal.
  • the mapping table includes different voltage values on the MIC pin that correspond to different conducted devices and a target operation event corresponding to each of the different voltage values.
  • a voltage value on the MIC pin changes when a different device is conducted, so that the terminal can find and perform a corresponding target operation event based on the voltage value on the MIC pin.
  • Target operation events corresponding to the different voltage values on the MIC pin in Table 1 are merely examples, and are not limited herein.
  • the button 1 is a button corresponding to R 2 .
  • the button 2 is a button corresponding to R 3 .
  • the button 3 is a button corresponding to R 4 .
  • a target operation event performed by the terminal when the transistor is conducted is playing music
  • when the transistor changes from a conducted state to a cut-off state to be specific, when a voltage value on the MIC pin changes from V 1 to 0, in other words, when it is detected that the headset changes from a worn state to a taken-off state, a target operation event performed by the terminal is pausing music/video playing, or stopping music/video playing and closing a background application of the terminal, thereby reducing power consumption.
  • a target operation event performed by the terminal when the transistor is conducted is automatically answering a call
  • the transistor changes from a conducted state to a cut-off state to be specific, when a voltage value on the MIC pin changes from V 1 to 0, in other words, when it is detected that the headset changes from a worn state to a taken-off state, a target operation event performed by the terminal is automatically hanging up a call.
  • the headset in FIG. 2 may further include a charging circuit.
  • the charging circuit includes a battery and a charger. One end of the battery is connected to the charger and the other end of the battery is grounded. An input end of the charger is connected to the MIC pin, and an output end of the charger is connected to the first sensor and the second sensor.
  • a dedicated charger may be used herein to charge the headset. The headset is pulled out for use after being fully charged. When the headset is plugged into the terminal, the battery supplies power to the sensor circuit in the headset. After power of the battery in the headset is exhausted, the headset needs to be recharged on the charger. In this embodiment of this application, only a circuit in the headset instead of a circuit in the terminal needs to be improved.
  • both the sensors in the left and right earbuds are capacitive sensors
  • the logic controller is an OR gate
  • the charging circuit provides a power supply for the sensors in the headset.
  • output of a capacitive sensor in at least one earbud of the headset changes from a low level to a high level, and a high level is output after an OR operation is performed by using the logic controller (the OR gate), so that the transistor is conducted, and the first resistor R 1 is used to change a voltage value on the MIC pin from 0 to V 1 .
  • the terminal finds, according to Table 1, that a corresponding target operation event is automatically playing music. In this case, the terminal automatically plays the music.
  • both output of the sensors in the two earbuds of the headset changes from a high level to a low level, and a low level is output after an OR operation is performed by using the logic controller (the OR gate), so that the transistor is cut off, and a voltage value on the MIC pin changes from V 1 to 0.
  • the terminal After detecting that the voltage value on the MIC pin changes, the terminal pauses music playing, or stops music playing and exits a background application of the terminal, thereby reducing power consumption.
  • only the circuit in the headset may be improved without improving the terminal.
  • the sensor circuit, the logic control circuit, and the charging circuit are added to the headset.
  • a sensor is used to sense the wearing status of the headset, and controls, after output of the sensor passes through the logic control circuit, the transistor to be conducted or cut off, to change the voltage value on the MIC pin of the headset, so that the terminal performs a target operation event based on a change in the voltage value on the MIC pin.
  • a manual operation of the user can be replaced, to avoid a case in which a received message is incomplete when the user manually enters the operation, thereby improving user experience, reducing power consumption, and so on.
  • a terminal needs to supply power to a headset provided in an embodiment of this application.
  • a power supply circuit is provided for the headset by reusing a first functional pin, and the first functional pin may be a MIC pin.
  • the terminal provides a MIC circuit for the headset by using the MIC pin
  • the terminal cannot provide the power supply circuit for the headset by using the MIC pin, and a sensor in the headset cannot work.
  • the terminal provides the power supply circuit for the headset by using the MIC pin
  • the terminal cannot provide a MIC circuit for the headset by using the MIC pin, and a microphone in the headset cannot be used. Further, when the microphone in the headset cannot be used, a sound signal may be collected by using a microphone in the terminal.
  • the terminal in this embodiment of this application is first described below.
  • FIG. 3 is a circuit diagram of a terminal according to an embodiment of this application.
  • the terminal includes a headset jack that may be connected to a connector of a headset having a sensor.
  • the connector of the headset includes at least one functional pin.
  • the terminal is connected to the headset by using the at least one functional pin of the connector of the headset.
  • the terminal may include a detection pin (DET), and the at least one functional pin of the headset may include a left pin (L), a right pin (R), a ground pin (G), and a microphone pin (MIC).
  • the terminal may determine, by detecting a level of the detection pin (DET), whether the connector of the headset is plugged.
  • the left pin (L) of the headset and the detection pin (DET) of the terminal are short-circuited, and the detected level of the detection pin (DET) is a low level.
  • the detected level of the detection pin (DET) is a high level.
  • the terminal further includes a power supply circuit, a sensor identification circuit, a MIC circuit, and a third switching switch.
  • the power supply circuit is configured to supply power to a sensor circuit in the headset, and includes an input end (IN), a power supply, and an output end (OUT).
  • the input end (IN) is connected to an input voltage (VIN), and the output end (OUT) is connected to the sensor identification circuit.
  • the sensor identification circuit includes a current sampling resistor (R 5 ), a first analog-to-digital converter (ADC 1), and a second analog-to-digital converter (ADC 2).
  • the first analog-to-digital converter (ADC 1) and the second analog-to-digital converter (ADC 2) are respectively connected to two ends of the current sampling resistor (R 5 ), and are configured to: measure voltages at the two ends of the current sampling resistor (R 5 ), and calculate a current that flows through the current sampling resistor (R 5 ), to determine, based on a value of the current that flows through the current sampling resistor (R 5 ), whether a sensor signal is transmitted to the headset.
  • the sensor signal When the sensor signal is transmitted to the headset, whether a signal is sent by a sensor after a specific button in the headset is pressed or after a transistor is conducted may be further identified based on the value of the current that flows through the current sampling resistor (R 5 ). A specific identification principle is described in detail below in a circuit in the headset.
  • One end of the current sampling resistor (R 5 ) is further connected to the output end of the power supply circuit, and the other end of the current sampling resistor (R 5 ) is further connected to the third switching switch.
  • the current sampling resistor is usually an ohm-level resistor, to ensure current collection precision.
  • a resistance value of the current sampling resistor (R 5 ) is known, it may also be understood that a voltage value on the MIC pin is measured by using the second analog-to-digital converter (ADC 2), so that the terminal performs a target operation event based on different voltage values on the MIC pin.
  • ADC 2 second analog-to-digital converter
  • the sensor identification circuit may further include a third voltage divider resistor (R 7 ), a fourth voltage divider resistor (R 8 ), a fifth voltage divider resistor (R 9 ), and a sixth voltage divider resistor (R 10 ), to reduce voltage values detected by the first analog-to-digital converter (ADC 1) and the second analog-to-digital converter (ADC 2), ensure that the voltage values detected by the first analog-to-digital converter (ADC 1) and the second analog-to-digital converter (ADC 2) fall within a measurement range of the analog-to-digital converter, and ensure that the first analog-to-digital converter (ADC 1) and the second analog-to-digital converter (ADC 2) normally work.
  • a third voltage divider resistor R 7
  • R 8 fourth voltage divider resistor
  • R 9 fifth voltage divider resistor
  • R 10 sixth voltage divider resistor
  • the third voltage divider resistor (R 7 ) and the fourth voltage divider resistor (R 8 ) are connected in series, the fifth voltage divider resistor (R 9 ) and the sixth voltage divider resistor (R 10 ) are connected in series, one end of the third voltage divider resistor (R 7 ) is connected to one end of the current sampling resistor (R5), and the other end of the fourth voltage divider resistor (R 8 ) is grounded.
  • One end of the fifth voltage divider resistor (R 9 ) is connected to the other end of the current sampling resistor (R 5 ), and the other end of the sixth voltage divider resistor (R 10 ) is grounded.
  • the first analog-to-digital converter (ADC 1) is connected to the other end of the third voltage divider resistor (R 7 ), and the second analog-to-digital converter (ADC 1) is connected to the other end of the fifth voltage divider resistor (R 9 ).
  • the MIC circuit includes a voltage sampling resistor (R 6 ), a third analog-to-digital converter (ADC 3), and a codec (Codec).
  • the codec (Codec) is configured to: process a sound signal transmitted by the headset by using the MIC pin, and convert the sound signal into an electrical signal.
  • One end of the voltage using resistor (R 6 ) is connected to the third switching switch.
  • the third analog-to-digital converter (ADC 3) is configured to collect a voltage of the voltage sampling resistor (R 6 ). To be specific, when the MIC circuit is closed by using the third switching switch, the third analog-to-digital converter (ADC 3) collects the voltage value on the MIC pin.
  • the terminal may identify a specific button in the headset by using the voltage value on the MIC pin, where a signal is sent after the button in the headset is pressed.
  • a specific identification principle is described in detail below in a circuit in the headset.
  • the voltage sampling resistor (R 6 ) connecting the codec of the terminal and the MIC pin of the headset in series is usually a kilohm-level resistor.
  • the third switching switch includes a ninth connection end (NC 1), a tenth connection end (NO 1), a fifth control end, and a fifth fixed end (COM 1).
  • the ninth connection end (NC 1) is connected to the voltage sampling resistor (R 6 )
  • the tenth connection end (NO 1) is connected to the current sampling resistor (R 5 )
  • the fifth fixed end (COM 1) is connected to the MIC pin
  • the fifth control end is connected to General Purpose Input/Output (General Purpose Input/Output, GPIO).
  • the GPIO may control, by using the fifth control end, the third switching switch to switch to the ninth connection end (NC 1), to be specific, the fifth fixed end (COM 1) is connected to the ninth connection end (NC 1), to provide the MIC circuit for the headset by using the MIC pin.
  • the GPIO may control, by using the fifth control end, the third switching switch to switch to the tenth connection end (NO 1), to be specific, the fifth fixed end (COM 1) is connected to the tenth connection end (NO 1), to provide the power supply circuit for the headset by using the MIC pin.
  • the voice input state may occur in a scenario in which a microphone needs to be used, for example, in a call, a voice, or a video.
  • the terminal may further include a stable resistor
  • the switching switch may include a ninth connection end, a tenth connection end, an eleventh connection end, a twelfth connection end, a fifth control end, a sixth control end, a fifth fixed end, and a sixth fixed end.
  • the ninth connection end is connected to the voltage sampling resistor (R 6 )
  • the tenth connection end is connected to the sixth fixed end
  • the eleventh connection end is connected to the current sampling resistor (R 5 )
  • the twelfth connection end is connected to one end of the stable resistor
  • the other end of the stable resistor is grounded.
  • the fifth fixed end is connected to the MIC pin
  • the fifth control end and the sixth control end are connected to GPIO.
  • the GPIO may control, by using the fifth control end, the fifth fixed end to connect to the ninth connection end, and the GPIO may simultaneously control, by using the sixth control end, the fifth fixed end to connect to the twelfth connection end.
  • the GPIO may control, by using the fifth control end, the fifth fixed end to connect to the tenth connection end, and the GPIO may simultaneously control, by using the sixth control end, the fifth fixed end to connect to the eleventh connection end. In this way, it can be ensured that regardless of how the switching switch performs switching, the connection ends of the switching switch are in a connected state.
  • the twelfth connection end may be grounded by using the stable resistor, thereby avoiding signal interference caused when the connection end is unconnected.
  • FIG. 4A and FIG. 4B are a circuit diagram of another headset according to an embodiment of this application.
  • the headset may include a connector of the headset configured to connect to the terminal, and the connector of the headset includes a plurality of functional pins, for example, a left pin (L), a right pin (R), a ground pin (G), and a microphone pin (MIC).
  • the headset may further include a left earbud, a right earbud, and a microphone.
  • the microphone is configured to: collect a sound signal and transmit the sound signal to the terminal by using the MIC pin.
  • the headset may include a voltage switching circuit, a button circuit, a voltage regulator (LDO), a comparator, and a first switching switch in addition to the sensor circuit and the logic control circuit that are described in Embodiment 1.
  • the first resistor (R 1 ) in the logic control circuit is connected to the first switching switch.
  • the voltage switching circuit includes a switch (Switch), a first voltage divider resistor (R 15 ), and a second voltage divider resistor (R 16 ).
  • the first voltage divider resistor (R 15 ) and the second voltage divider resistor (R 16 ) are connected in series, and one end of the first voltage divider resistor (R 15 ) is connected to the MIC pin.
  • the switch (Switch) includes an input end (IN), an enable end (EN), and a switching output end (OUT).
  • the input end (IN) is connected to the MIC pin and one end of the first voltage divider resistor (R 15 ), the enable end (EN) is connected to the other end of the first voltage divider resistor (R 15 ), and the switching output end (OUT) is connected to the first sensor (Sensor 1), the second sensor (Sensor 2), and the voltage regulator (LDO).
  • the input end (IN) is connected to the MIC pin, and is configured to connect, by using the MIC pin, to the power supply circuit provided by the terminal for the headset.
  • the enable end (EN) is connected to the other end of the first voltage divider resistor (R 15 ), and is configured to adjust a voltage value that is input to the enable end to a range of a working voltage of the switch.
  • the switch can normally work only when the voltage value that is input to the enable end (EN) is within the range of the working voltage of the switch.
  • the switching output end (OUT) is configured to output a voltage value range that matches the sensor circuit, to improve power supplying efficiency of the power supply circuit provided by the terminal for the sensor circuit in the headset by using the MIC pin.
  • the switch (Switch) may be a DC-DC converter or the like.
  • the voltage regulator includes a voltage regulation input end (IN) and a voltage regulation output end (OUT).
  • the voltage regulation output end (OUT) is connected to the comparator, and is configured to output a reference voltage.
  • the comparator includes a first voltage input end, a second voltage input end, and a comparison output end.
  • the first voltage input end is connected to the MIC pin and is configured to input a voltage value on the MIC pin.
  • the second voltage input end is connected to the voltage regulation output end (OUT) of the voltage regulator (LDO), so that the comparator compares the voltage value on the MIC pin with a value of the reference voltage.
  • the comparison output end is connected to the first switching switch, and is configured to: output a comparison result of the comparator, and control, based on the comparison result, the first switching switch to perform switching.
  • the voltage value on the MIC pin is usually approximately 2 V, but when the MIC pin is used by the terminal to provide the power supply circuit for the headset, the voltage value on the MIC pin is usually approximately 5 V.
  • the reference voltage may be set to a voltage value between the voltage value on the MIC pin in the MIC circuit and the voltage value on the MIC pin in the power supply circuit, such as 3 V or 4 V.
  • the comparison result of the comparator is that the voltage value on the MIC pin is greater than the value of the reference voltage, it indicates that the terminal provides the power supply circuit for the headset by using the MIC pin in this case.
  • the comparison result of the comparator is that the voltage value on the MIC pin is less than the value of the reference voltage, it indicates that the terminal provides the MIC circuit for the headset by using the MIC pin in this case.
  • the first switching switch includes a first connection end (NO 1), a second connection end (NC 1), a first control end, and a first fixed end (COM 1).
  • the first control end is connected to the comparison output end of the comparator, and the first control end is used to control, based on an output result of the comparator, the first switching switch to perform switching.
  • the first fixed end (COM 1) is connected to a first functional pin, and the first functional pin in this embodiment of this application is the MIC pin.
  • the first resistor (R 1 ) in the logic control circuit is connected to the first connection end (NO 1) of the first switching switch.
  • the button circuit includes a plurality of buttons, and a plurality of first button resistors and a plurality of second button resistors that are in a one-to-one correspondence with the plurality of buttons.
  • Each button is connected to the first connection end (NO 1) of the first switching switch by using a first button resistor (R 2 , R 3 , or R 4 ) corresponding to the button, and each button is connected to the second connection end (NC 1) of the first switching switch by using a second button resistor (R 11 , R 12 , or R 13 ) corresponding to the button.
  • the first control end is used to control the first fixed end (COM 1) of the first switching switch to connect to the first connection end (NO 1).
  • the first control end is used to control the first fixed end (COM 1) of the first switching switch to connect to the second connection end (NC 1).
  • Two groups of button resistors namely, the plurality of first button resistors and the plurality of second button resistors, need to be sampled in the button circuit, where the first button resistors are ohm-level resistors, and the second button resistors are kilohm-level resistors, so that when the MIC pin of the headset is connected to the power supply circuit or the MIC circuit, the terminal can correctly identify whether a change in the voltage on the MIC pin is generated because the transistor is conducted or because a specific button is conducted.
  • the fifth fixed end (COM 1) of the third switching switch is connected to the tenth connection end (NO 1).
  • the comparator in the headset determines that the MIC pin is connected to the power supply circuit in this case, and controls the first fixed end (COM 1) of the first switching switch to connect to the first connection end (NO 1).
  • the first resistor (R 1 ) or any first button resistor (R 2 , R 3 , or R 4 ) and the current sampling resistor (R 5 ) are connected in series to change the voltage value on the MIC pin, to change a voltage value detected by the second analog-to-digital converter (ADC 2), and change a current that flows through the current sampling resistor (R 5 ).
  • the current sampling resistor (R 5 ) is an ohm-level resistor
  • all the first button resistors (R 2 , R 3 , and R 4 ) need to be set to ohm-level resistors to ensure that when the MIC pin is connected to the power supply circuit, the terminal can correctly identify whether the change in the voltage on the MIC pin is generated because the transistor is conducted or because a specific button is conducted.
  • R 5 has a resistance value of 5 ⁇
  • R 1 , R 2 , R 3 , and R 4 have resistance values of 5 ⁇ , 10 ⁇ , 15 ⁇ , and 20 ⁇ .
  • the current that flows through R 5 is 0.15 A.
  • R 5 When a first button corresponding to R 4 is pressed, the current that flows through R 5 is 0.12 A. It is assumed that a difference between voltages at two ends of R 5 is 3 V, R 5 has a resistance value of 5 ⁇ , and R 1 , R 2 , R 3 , and R 4 are kilohm-level resistors, and have resistance values of 2 K ⁇ , 3 K ⁇ , 4 K ⁇ , and 5 K ⁇ . In this case, it may be determined, through calculation, that the current that flows through R 5 is separately 1.5 mA, 1 mA, 0.75 mA, and 0.6 mA when the transistor is conducted or any button is pressed.
  • the fifth fixed end (COM 1) of the third switching switch is connected to the ninth connection end (NC 1).
  • the comparator in the headset determines that the MIC pin is connected to the MIC circuit in this case, and controls the first fixed end (COM 1) of the first switching switch to connect to the second connection end (NC 1).
  • any button is pressed, any second button resistor (R 11 , R 12 , or R 13 ) and the voltage sampling resistor (R 6 ) are connected in series to change the voltage value on the MIC pin, to change a voltage value detected by the second analog-to-digital converter (ADC 3).
  • the voltage sampling resistor (R 6 ) is a kilohm-level resistor
  • all the second button resistors (R 11 , R 12 , and R 13 ) need to be set to kilohm-level resistors to ensure that when the MIC pin is connected to the MIC circuit, the terminal can correctly identify whether the change in the voltage on the MIC pin is generated because the transistor is conducted or because a specific button is conducted.
  • both the sensors in the left and right earbuds are capacitive sensors
  • the logic controller is an OR gate
  • the power supply circuit in the terminal supplies power to the sensor circuit in the headset by using the MIC pin.
  • the fifth fixed end (COM 1) of the third switching switch switches from the tenth connection end (NO 1) to the ninth connection end (NC 1), in other words, the terminal automatically switches from the power supply circuit to the MIC circuit.
  • the terminal provides the MIC circuit for the headset by using the MIC pin, so that the user can input a voice (a sound signal) by using the microphone, and the sound signal is transmitted to the terminal by using the MIC pin.
  • the comparison output end of the comparator controls the first fixed end (COM 1) of the first switching switch to switch from the first connection end (NO 1) to the second connection end (NC 1).
  • Each button is connected to the MIC pin by using a second button resistor.
  • a second button resistor corresponding to the button may be used to change the voltage value on the MIC pin, so that the terminal detects the voltage value on the MIC pin by using the third analog-to-digital converter (ADC 3), and performs a target operation event based on the voltage value on the MIC pin.
  • the fifth fixed end (COM 1) of the third switching switch switches from the ninth connection end (NC 1) to the tenth connection end (NO 1), in other words, the terminal automatically switches from the MIC circuit to the power supply circuit.
  • the terminal provides the power supply circuit for the headset by using the MIC pin.
  • the comparison output end of the comparator controls the first fixed end (COM 1) of the first switching switch to switch from the second connection end (NC 1) to the first connection end (NO 1).
  • Each button is connected to the MIC pin by using a first button resistor.
  • the sensor circuit in the headset may resume detecting a wearing status of the headset, and control the transistor to be conducted, and the first resistor R 1 is used to change the voltage value on the MIC pin.
  • the user manually controls each button to be conducted, and a first button resistor corresponding to the button is used to change the voltage value on the MIC pin, so that the terminal detects the voltage value on the MIC pin by using the second analog-to-digital converter (ADC 2), and performs a target operation event based on the voltage value on the MIC pin.
  • ADC 2 second analog-to-digital converter
  • This embodiment of this application provides the terminal and the headset, the power supply circuit, the sensor identification circuit, and the third switching switch are newly added to the terminal, and the voltage switching circuit, the sensor circuit, the logic control circuit, the button circuit, the voltage regulator, the comparator, and the first switching switch are newly added to the headset.
  • the terminal supplies power to the sensor in the headset, and provides the MIC circuit or the power supply circuit for the headset by reusing the MIC pin.
  • the terminal supplies power to the sensor circuit in the headset, and the sensor senses the wearing status of the headset, and controls, after output of the sensor passes through the logic control circuit, the transistor to be conducted, to change the voltage value on the MIC pin of the headset, so that the terminal performs a target operation event based on a change in the voltage value on the MIC pin.
  • the terminal automatically plays music or a video, and when the headset is taken off, the terminal automatically pauses or stops music or video playing.
  • the headset is worn to automatically answer the call.
  • a manual operation of the user can be replaced, to avoid a case in which a received message is incomplete when the user manually enters the operation, thereby improving user experience, reducing power consumption, and so on.
  • a terminal needs to supply power to a headset provided in an embodiment of this application.
  • a power supply circuit is provided for the headset by reusing a first functional pin, and the first functional pin may be a MIC pin.
  • An improvement is made in this embodiment of this application based on Embodiment 2, and a charging circuit and a second resistor are newly added to a headset end.
  • the terminal provides a MIC circuit for the headset by using the MIC pin
  • the terminal cannot provide the power supply circuit for the headset by using the MIC pin, but the charging circuit in the headset can supply power to a sensor circuit, in other words, a sensor in the headset can still work.
  • the terminal provided in this embodiment of this application is the same as the terminal in Embodiment 2. Details are not described herein again.
  • FIG. 5A and FIG. 5B are a circuit diagram of another headset according to an embodiment of this application.
  • the headset may include a connector of the headset configured to connect to the terminal, and the connector of the headset includes a plurality of functional pins, for example, a left pin (L), a right pin (R), a ground pin (G), and a microphone pin (MIC).
  • the headset may further include a left earbud, a right earbud, and a microphone.
  • the microphone is configured to: collect a sound signal and transmit the sound signal to the terminal by using the MIC pin.
  • the headset may include a charging circuit and a logic control circuit in addition to the sensor circuit, the button circuit, the voltage regulator (LDO), the comparator, and the first switching switch that are included in the headset described in Embodiment 2.
  • the charging circuit includes a battery and a charger. One end of the battery is connected to the charger and the other end of the battery is grounded. An input end of the charger is connected to the MIC pin, and an output end of the charger is connected to the first sensor and the second sensor.
  • the power supply circuit in the terminal is used to charge the charging circuit in the headset. The terminal may also supply power to the charging circuit in the headset while providing the power supply circuit for the headset by using the MIC pin.
  • a second resistor (R 14 ) is newly added to the logic control circuit, and the second resistor (R 14 ) is a kilohm-level resistor.
  • One end of the second resistor (R 14 ) is connected to the transistor, and the other end of the second resistor (R 14 ) is connected to the second connection end (NC 1) of the first switching switch.
  • the terminal provides the MIC circuit for the headset by using the MIC pin
  • the first fixed end (COM 1) of the first switching switch is connected to the second connection end (NC 1).
  • the charging circuit in the headset supplies power to the sensor circuit.
  • the second resistor (R 14 ) may be used to change a voltage value on the MIC pin.
  • the second resistor (R 14 ) and the voltage sampling resistor (R 6 ) in the terminal are connected in series, so that the terminal can perform a corresponding operation event by using the voltage value on the MIC pin that is detected by the third analog-to-digital converter (ADC 3).
  • the voltage sampling resistor (R 6 ) and the second button resistors (Rn, R 12 , and R 13 ) are all kilohm-level resistors, it can be ensured, only when the second resistor (R 14 ) is also a kilohm-level resistor, that when the MIC pin is connected to the MIC circuit, the terminal can correctly identify whether a change in the voltage on the MIC pin is generated because the transistor is conducted or because a specific button is conducted.
  • both the sensors in the left and right earbuds are capacitive sensors
  • the logic controller is an OR gate
  • the power supply circuit in the terminal supplies power to the sensor circuit in the headset by using the MIC pin.
  • the charging circuit in the headset supplies power to the sensor circuit in the headset.
  • output of a capacitive sensor in at least one earbud of the headset changes from a low level to a high level, and a high level is output after an OR operation is performed by using the logic controller (the OR gate), so that the transistor is conducted, and the first resistor R 1 is used to change a voltage value on the MIC pin from 0 to V 1 .
  • the fifth fixed end (COM 1) of the third switching switch switches from the tenth connection end (NO 1) to the ninth connection end (NC 1), in other words, the terminal automatically switches from the power supply circuit to the MIC circuit.
  • the terminal provides the MIC circuit for the headset by using the MIC pin, and the charging circuit in the headset supplies power to the sensor circuit, so that the user can input a voice (a sound signal) by using the microphone, and the sound signal is transmitted to the terminal by using the MIC pin.
  • the comparison output end of the comparator controls the first fixed end (COM 1) of the first switching switch to switch from the first connection end (NO 1) to the second connection end (NC 1).
  • the second resistor R 14 and each button each are connected to the MIC pin by using a second button resistor.
  • R 14 or a second button resistor corresponding to the button may be used to change the voltage value on the MIC pin, so that the terminal detects the voltage value on the MIC pin by using the third analog-to-digital converter (ADC 3), and performs a target operation event based on the voltage value on the MIC pin.
  • ADC 3 analog-to-digital converter
  • the terminal is in a non-voice input state, and the fifth fixed end (COM 1) of the third switching switch switches from the ninth connection end (NC 1) to the tenth connection end (NO 1), in other words, the terminal automatically switches from the MIC circuit to the power supply circuit.
  • the terminal provides the power supply circuit for the headset by using the MIC pin, and charges the charging circuit in the headset by using the MIC pin.
  • the comparison output end of the comparator controls the first fixed end (COM 1) of the first switching switch to switch from the second connection end (NC 1) to the first connection end (NO 1).
  • the first resistor R 1 and each button each are connected to the MIC pin by using a first button resistor.
  • R 1 or a first button resistor corresponding to the button may be used to change the voltage value on the MIC pin, so that the terminal detects the voltage value on the MIC pin by using the second analog-to-digital converter (ADC 2), and performs a target operation event based on the voltage value on the MIC pin.
  • ADC 2 second analog-to-digital converter
  • This embodiment of this application provides the terminal and the headset, the power supply circuit, the sensor identification circuit, and the third switching switch are newly added to the terminal, and the charging circuit, the sensor circuit, the logic control circuit, the button circuit, the voltage regulator, the comparator, and the first switching switch are newly added to the headset.
  • the terminal supplies power to the sensor in the headset, charges the charging circuit in the headset, and provides the MIC circuit or the power supply circuit for the headset by reusing the MIC circuit.
  • the microphone and the sensor circuit may work at the same time, and the charging circuit in the headset supplies power to the sensor circuit when the microphone works.
  • the sensor senses a wearing status of the headset, and controls, after output of the sensor passes through the logic control circuit, the transistor to be conducted, to change the voltage value on the MIC pin of the headset, so that the terminal performs a target operation event based on a change in the voltage value on the MIC pin.
  • the terminal automatically plays music or a video, and when the headset is taken off, the terminal automatically pauses or stops music or video playing.
  • the headset is worn to automatically answer the call, and the headset is taken off to automatically hang up the call.
  • a manual operation of the user can be replaced, to avoid a case in which a received message is incomplete when the user manually enters the operation, thereby improving user experience, reducing power consumption, and so on.
  • a terminal needs to supply power to a headset provided in an embodiment of this application.
  • a power supply circuit is provided for the headset by using a first functional pin or a second functional pin.
  • the first functional pin may be a MIC pin
  • the second functional pin may be an L pin or an R pin.
  • an example in which the second functional pin is the R pin is used for description.
  • the terminal may simultaneously provide the power supply circuit for the headset by using the R pin.
  • the terminal provides an audio circuit for the headset by using the R pin
  • the terminal may simultaneously provide the power supply circuit for the headset by using the MIC pin.
  • the audio circuit is used by the terminal to provide a sound signal for the headset.
  • FIG. 6 is a circuit diagram of another terminal according to an embodiment of this application.
  • the terminal includes a headset jack that may be connected to a connector of a headset having a sensor.
  • the connector of the headset includes at least one functional pin.
  • the terminal is connected to the headset by using the at least one functional pin of the connector of the headset.
  • the terminal may include a detection pin (DET), and the at least one functional pin of the headset may include a left pin (L), a right pin (R), a ground pin (G), and a microphone pin (MIC).
  • the terminal may determine, by detecting a level of the detection pin (DET), whether the connector of the headset is plugged.
  • the left pin (L) of the headset and the detection pin (DET) of the terminal are short-circuited, and the detected level of the detection pin (DET) is a low level.
  • the detected level of the detection pin (DET) is a high level.
  • the terminal further includes a power supply circuit, a sensor identification circuit, a MIC circuit, and a third switching switch.
  • the electric circuit, the sensor identification circuit, and the MIC circuit in the terminal are the same as the electric circuit, the sensor identification circuit, and the MIC circuit in the terminal provided in Embodiment 2 and Embodiment 3. Details are not described herein again.
  • the third switching switch includes a fifth connection end (NC 1), a six connection end (NO 1), a seventh connection end (NC 2), an eighth connection end (NO 2), a third control end, a fourth control end, a third fixed end (COM 1), and a fourth fixed end (COM 2).
  • the fifth connection end (NC 1) is connected to an audio circuit (LINE R)
  • the sixth connection end (NO 1) is connected to the current sampling resistor (R 5 )
  • the third fixed end (COM 1) is connected to the R pin
  • the seventh connection end (NC 2) is connected to the voltage sampling resistor (R 6 )
  • the eighth connection end (NO 2) is connected to the current sampling resistor
  • the fourth fixed end (COM 2) is connected to the MIC pin.
  • the third control end is connected to GPIO 1, and the fourth control end is connected to GPIO 2.
  • the GPIO 1 may control, by using the third control end, the third fixed end (COM 1) to connect to the sixth connection end (NO 1)
  • the GPIO 2 may control, by using the fourth control end, the fourth fixed end (COM 2) to connect to the seventh connection end (NC 2), in other words, the terminal provides the power supply circuit for the headset by using the R pin, and simultaneously provides the MIC circuit for the headset by using the MIC pin.
  • the GPIO 1 may control, by using the third control end, the third fixed end (COM 1) to connect to the fifth connection end (NC 1), and the GPIO 2 may control, by using the fourth control end, the fourth fixed end (COM 2) to connect to the eighth connection end (NO 2), in other words, the terminal provides the audio circuit for the headset by using the R pin, and simultaneously provides the power supply circuit for the headset by using the MIC pin.
  • the voice input state may occur in a scenario in which a microphone needs to be used, for example, in a call, a voice, or a video.
  • the audio output state may occur in a music listening scenario.
  • a state in which both voice input and audio output occur for example, a state in which a user is in a conversation with the other party during a call is considered as a voice input state.
  • the audio output state is a state in which the terminal outputs only a sound signal.
  • FIG. 7A and FIG. 7B are a circuit diagram of another headset according to an embodiment of this application.
  • the headset may include a connector of the headset configured to connect to the terminal, and the connector of the headset includes a plurality of functional pins, for example, a left pin (L), a right pin (R), a ground pin (G), and a microphone pin (MIC).
  • the headset may further include a left earbud, a right earbud, and a microphone.
  • the microphone is configured to: collect a sound signal and transmit the sound signal to the terminal by using the MIC pin.
  • a left speaker and a right speaker are respectively placed in the left earbud and the right earbud.
  • the left speaker is connected to the L pin, and is configured to output a sound signal that is output by the terminal by using the L pin
  • the right speaker is connected to the R pin, and is configured to output a sound signal that is output by the terminal by using the R pin.
  • the headset may include a first switching switch in addition to the sensor circuit and the logic control circuit that are described in Embodiment 1 and the voltage switching circuit, the voltage regulator (LDO), and the comparator that are described in Embodiment 2.
  • the first resistor (R 1 ) in the logic control circuit is connected to the first switching switch.
  • the first switching switch includes a first connection end (NO 1), a second connection end (NC 1), a first control end, and a first fixed end (COM 1).
  • the first fixed end (COM 1) is connected to the first resistor (R 1 ) in the logic control circuit and each first button resistor (R 2 , R 3 , or R 4 ) in a button circuit.
  • the first connection end (NO 1) is connected to the MIC pin, and the second connection end (NC 1) is connected to the R pin.
  • the first control end is connected to the comparison output end of the comparator, and the first control end is used to control, based on an output result of the comparator, the first switching switch to perform switching.
  • the first control end is used to control the first fixed end (COM 1) of the first switching switch to connect to the first connection end (NO 1).
  • the first control end is used to control the first fixed end (COM 1) of the first switching switch to connect to the second connection end (NC 1).
  • both sensors in the left and right earbuds are capacitive sensors
  • the logic controller is an OR gate
  • the power supply circuit in the terminal supplies power to the sensor circuit in the headset by using the MIC pin or the R pin.
  • output of a capacitive sensor in at least one earbud of the headset changes from a low level to a high level, and a high level is output after an OR operation is performed by using the logic controller (the OR gate), so that the transistor is conducted, and the first resistor R 1 is used to change a voltage value on the MIC pin from 0 to V 1 .
  • the third fixed end (COM 1) of the third switching switch is connected to the sixth connection end (NO 1)
  • the fourth fixed end (COM 2) of the third switching switch is connected to the seventh connection end (NC 2)
  • the power supply circuit is provided for the headset by using the R pin.
  • the comparison output end of the comparator controls the first fixed end (COM 1) of the first switching switch to connect to the second connection end (NC 1).
  • the first resistor R 1 is used to change a voltage value on the R pin, so that the terminal detects the voltage value on the R pin by using the second analog-to-digital converter (ADC 2), and performs a target operation event based on the voltage value on the R pin.
  • ADC 2 analog-to-digital converter
  • both output of the capacitive sensors in the two earbuds of the headset changes from a high level to a low level, and a low level is output after an operation is performed by using the logic controller (the OR gate), so that the transistor is cut off, and a voltage value on the MIC pin changes from V 1 to 0.
  • the terminal After the terminal detects that the voltage value on the MIC pin changes, if a target operation event found by the terminal based on a change in the voltage value is automatically hanging up the call, the terminal automatically hangs up the call.
  • the third fixed end (COM 1) of the third switching switch is connected to the fifth connection end (NC 1)
  • the fourth fixed end (COM 2) of the third switching switch is connected to the eighth connection end (NO 2)
  • the power supply circuit is provided for the headset by using the MIC pin.
  • the comparison output end of the comparator controls the first fixed end (COM 1) of the first switching switch to connect to the first connection end (NO 1).
  • the first resistor R 1 is used to change a voltage value on the MIC pin, so that the terminal detects the voltage value on the MIC pin by using the second analog-to-digital converter (ADC 2), and performs a target operation event based on the voltage value on the MIC pin.
  • This embodiment of this application provides the terminal and the headset, the power supply circuit, the sensor identification circuit, and the third switching switch are newly added to the terminal, and the voltage switching circuit, the sensor circuit, the logic control circuit, the voltage regulator, the comparator, and the first switching switch are newly added to the headset.
  • the terminal supplies power to the sensor in the headset, and provides the power supply circuit for the sensor circuit in the headset by using the MIC pin or the R pin.
  • the terminal when it is detected that the terminal is in the voice input state, the terminal supplies power to the sensor circuit by using the R pin, and simultaneously outputs a sound signal by using the L pin, to be specific, the left speaker connected to the L pin outputs the sound signal, and the right speaker connected to the R pin does not output the sound signal.
  • the sensor senses a wearing status of the headset, and controls, after output of the sensor passes through the logic control circuit, the transistor to be conducted, to change the voltage value on the R pin of the headset, so that the terminal performs a target operation event based on a change in the voltage value on the R pin.
  • the terminal supplies power to the sensor circuit by using the MIC pin.
  • the sensor senses a wearing status of the headset, and controls, after output of the sensor passes through the logic control circuit, the transistor to be conducted, to change the voltage value on the MIC pin of the headset, so that the terminal performs a target operation event based on a change in the voltage value on the MIC pin.
  • the terminal when the headset is worn, the terminal automatically plays music or a video, and when the headset is taken off, the terminal automatically pauses or stops music or video playing.
  • the headset when a call is detected, the headset is worn to automatically answer the call, and the headset is taken off to automatically hang up the call.
  • a manual operation of the user can be replaced, to avoid a case in which a received message is incomplete when the user manually enters the operation, thereby improving user experience, reducing power consumption, and so on.
  • the second connection end (NC 1) is connected to the L pin.
  • the terminal supplies power to the sensor circuit by using the L pin, and simultaneously outputs a sound signal by using the R pin, to be specific, the right speaker connected to the R pin outputs the sound signal, and the left speaker connected to the L pin does not output the sound signal, so that the terminal performs a target operation event by detecting a change in a voltage value on the L pin of the headset.
  • the terminal supplies power to the sensor circuit by using the MIC pin, so that the terminal performs a target operation event by detecting a change in the voltage value on the MIC pin of the headset.
  • a terminal provided in an embodiment of this application is totally the same as the terminal provided in Embodiment 4. Details are not described herein again.
  • a sound signal copy circuit is newly added, based on the headset provided in Embodiment 4, in a headset provided in this embodiment of this application.
  • the connector of the headset further includes a third functional pin.
  • the third functional pin is the L pin.
  • the second functional pin is the L pin
  • the third functional pin is the R pin.
  • An example in which the second pin is the R pin and the third pin is the L pin is used herein for description. It is assumed that there is a sound transmission channel between the R pin and the right speaker, which is referred to as a first sound transmission channel, and there is a sound transmission channel between the L pin and the left speaker, which is referred to as a second sound transmission channel.
  • FIG. 8 is a diagram of a sound signal copy circuit according to an embodiment of this application.
  • the sound signal copy circuit includes a second switching switch.
  • the second switching switch includes a third connection end (NO 1), a fourth connection end (NC 1), a second control end, and a second fixed end (COM 1).
  • the second fixed end (COM 1) is connected to the first sound transmission channel (R-SPK)
  • the third connection end (NO 1) is connected to the R pin
  • the fourth connection end (NC 1) is connected to the L pin
  • the second control end is connected to the comparison output end of the comparator.
  • the comparison output end controls the second fixed end (COM 1) of the second switching switch to connect to the third connection end (NO 1).
  • the comparison output end controls the second fixed end (COM 1) of the second switching switch to connect to the fourth connection end (NC 1).
  • the terminal when it is detected that the terminal is in a voice input state, the terminal may supply power to the sensor circuit by using the R pin, simultaneously output a sound signal by using the L pin, and copy, into the first sound transmission channel connected to the R pin, the sound signal that is output by the L pin.
  • the sound signal transmitted on the first sound transmission channel is the same as a sound signal transmitted on the second sound transmission channel.
  • the left speaker and the right speaker simultaneously output the sound signal transmitted on the second sound transmission channel, to improve user experience.
  • the terminal supplies power to the sensor circuit by using the L pin, simultaneously outputs a sound signal by using the R pin, and copies, into the second sound transmission channel connected to the L pin, the sound signal that is output by the R pin.
  • a sound signal transmitted on the first sound transmission channel is the same as the sound signal transmitted on the second sound transmission channel.
  • the left speaker and the right speaker simultaneously output the sound signal transmitted on the first sound transmission channel.
  • FIG. 9 is a schematic diagram of a control method not covered by the claims.
  • the control method may include at least the following several steps.
  • S101 Sense a wearing status of a headset by using a sensor in a sensor circuit.
  • the senor may be but is not limited to a temperature sensor, a photosensor, a capacitive sensor, an acceleration sensor, or the like.
  • a temperature sensor e.g., a Bosch Sensortec BMA150 senor
  • a photosensor e.g., a Bosch Sensortec BMA150 senor
  • a capacitive sensor e.g., a Bosch Sensortec BMA150 senor
  • S103 Output a trigger signal to a logic control circuit based on the wearing status of the headset.
  • the logic control circuit is a circuit included in the headset.
  • the logic control circuit is a circuit included in the headset.
  • the logic control circuit refers to the description of the logic control circuit in the foregoing embodiment. The details are not described herein again.
  • the functional pin is a functional pin of a connector of the headset
  • the connector of the headset includes at least one functional pin
  • the connector of the headset is a connector used by the headset to connect to a terminal.
  • the target operation event is preset for the voltage value on the functional pin.
  • the target operation event is preset for the voltage value on the functional pin.
  • the voltage on the functional pin can be changed after output of the sensor circuit passes through the logic control circuit, so that the terminal performs different operation events based on different voltage values on the functional pin.
  • the program may be stored in a computer readable storage medium. When the program runs, the processes of the method are performed.
  • the storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM).
  • a sequence of the steps of the method may be adjusted, combined, or removed based on an actual requirement.
  • the modules in the apparatus in the embodiments of this application may be combined, divided, and deleted based on an actual requirement.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • General Physics & Mathematics (AREA)
  • Telephone Function (AREA)

Claims (15)

  1. Écouteurs, comprenant un connecteur des écouteurs configuré pour se connecter à un terminal, le connecteur des écouteurs comprenant au moins une broche fonctionnelle, les écouteurs comprenant en outre un circuit de détection et un circuit de commande logique, et le circuit de détection étant connecté à une broche fonctionnelle du connecteur des écouteurs en utilisant le circuit de commande logique ;
    le circuit de détection étant configuré pour : détecter un état de port des écouteurs, et émettre en sortie un signal de déclenchement au circuit de commande logique lorsque l'état de port change ; et
    le circuit de commande logique étant configuré pour modifier, sur la base du signal de déclenchement, une valeur de tension sur la broche fonctionnelle connectée au circuit de commande logique, pour déclencher le terminal afin d'exécuter un événement d'opération cible sur la base d'une valeur de tension modifiée sur la broche fonctionnelle, l'événement d'opération cible étant prédéfini pour la valeur de tension sur la broche fonctionnelle ;
    le connecteur des écouteurs comprenant spécifiquement une première broche fonctionnelle et une seconde broche fonctionnelle ;
    les écouteurs comprenant en outre un régulateur de tension, un comparateur et un premier commutateur de commutation, le premier commutateur de commutation comprenant une première extrémité de connexion, une seconde extrémité de connexion, une première extrémité de commande et une première extrémité fixe, la première extrémité de commande étant connectée au comparateur, et le régulateur de tension comprenant une extrémité d'entrée de régulation de tension et une extrémité de sortie de régulation de tension ; et
    le comparateur comprenant une première extrémité d'entrée de tension, une seconde extrémité d'entrée de tension, et une extrémité de sortie de comparaison, la première extrémité d'entrée de tension étant connectée à la première broche fonctionnelle et étant configurée pour entrer une valeur de tension sur la première broche fonctionnelle, et la seconde extrémité d'entrée de tension étant connectée à l'extrémité de sortie de régulation de tension du régulateur de tension et étant configurée pour entrer une valeur de tension de référence ; et l'extrémité de sortie de comparaison étant connectée à la première extrémité de commande du premier commutateur de commutation, et configurée pour émettre en sortie un résultat de comparaison, déterminer, sur la base du résultat de comparaison, si la première broche fonctionnelle est connectée à un circuit d'alimentation ou à un circuit de microphone, et lorsqu'il est déterminé que la première broche fonctionnelle est connectée au circuit d'alimentation, étant configurée pour commander la première extrémité fixe du premier commutateur de commutation pour la connecter à la première extrémité de connexion, ou, lorsqu'il est déterminé que la première broche fonctionnelle est connectée au circuit de microphone, étant configurée pour commander la première extrémité fixe du premier commutateur de commutation pour la connecter à la seconde extrémité de connexion, le circuit de microphone et le circuit d'alimentation étant fournis par le terminal.
  2. Écouteurs selon la revendication 1, la première extrémité fixe du premier commutateur de commutation étant connectée au circuit de commande logique, la première extrémité de connexion étant connectée à la première broche fonctionnelle, et la deuxième extrémité de connexion étant connectée à la deuxième broche fonctionnelle.
  3. Écouteurs selon la revendication 2, les écouteurs comprenant en outre un circuit de boutons, le circuit de boutons comprenant une pluralité de boutons et une pluralité de premières résistances de boutons qui sont en correspondance un à un avec la pluralité de boutons, et chaque bouton étant connecté à la première extrémité fixe du premier commutateur de commutation en utilisant une première résistance de bouton correspondant au bouton.
  4. Écouteurs selon la revendication 3, le circuit de capteur comprenant un premier capteur et un second capteur, le circuit de commande logique comprenant un dispositif de commande logique, un transistor, et une première résistance, le dispositif de commande logique comprenant une première extrémité d'entrée, une seconde extrémité d'entrée, et une extrémité de sortie logique, la première extrémité d'entrée étant connectée au premier capteur, la seconde extrémité d'entrée étant connectée au second capteur, l'extrémité de sortie logique étant connectée à une extrémité de la première résistance en utilisant le transistor, et l'autre extrémité de la première résistance étant connectée à la première extrémité fixe du premier commutateur de commutation.
  5. Écouteurs selon la revendication 4, le connecteur des écouteurs comprenant en outre une troisième broche fonctionnelle, et les écouteurs comprenant en outre un premier canal de transmission du son, un deuxième canal de transmission du son, et un deuxième commutateur de commutation ; le deuxième commutateur de commutation comprenant une troisième extrémité de connexion, une quatrième extrémité de connexion, une deuxième extrémité de commande, et une deuxième extrémité fixe ; la deuxième extrémité fixe étant connectée au premier canal de transmission du son ; la troisième extrémité de connexion étant connectée à la deuxième broche fonctionnelle ; la quatrième extrémité de connexion étant connectée à la troisième broche fonctionnelle ; la deuxième extrémité de commande étant connectée à l'extrémité de sortie de comparaison du comparateur ; et lorsqu'un résultat de sortie de l'extrémité de sortie de comparaison indique que la première broche fonctionnelle est connectée au circuit d'alimentation, l'extrémité de sortie de comparaison est configurée pour commander la deuxième extrémité fixe du deuxième commutateur de commutation pour la connecter à la troisième extrémité de connexion, ou lorsqu'un résultat de sortie de l'extrémité de sortie de comparaison indique que la première broche fonctionnelle est connectée au circuit de microphone, l'extrémité de sortie de comparaison est configurée pour commander la deuxième extrémité fixe du deuxième commutateur de commutation pour la connecter à la quatrième extrémité de connexion.
  6. Écouteurs selon la revendication 4 ou 5, les écouteurs comprenant en outre un circuit de commutation de tension, le circuit de commutation de tension comprenant un commutateur, une première résistance de division de tension, et une deuxième résistance de division de tension, la première résistance de division de tension et la deuxième résistance de division de tension étant connectées en série, une extrémité de la première résistance de division de tension étant connectée à une broche fonctionnelle, la broche fonctionnelle étant la broche fonctionnelle connectée au circuit de commande logique, le commutateur comprenant une extrémité d'entrée, une extrémité de validation et une extrémité de sortie de commutation, l'extrémité d'entrée étant connectée à la broche fonctionnelle, l'extrémité de validation étant connectée à l'autre extrémité de la première résistance de division de tension, et l'extrémité de sortie de commutation étant connectée au premier capteur, au second capteur et à l'extrémité d'entrée de régulation de tension du régulateur de tension.
  7. Écouteurs selon la revendication 1, les écouteurs comprenant en outre un circuit de boutons, le circuit de boutons comprenant une pluralité de boutons, et une pluralité de premières résistances de bouton et une pluralité de secondes résistances de bouton qui sont en correspondance un à un avec la pluralité de boutons, chaque bouton étant connecté à la première extrémité de connexion du premier commutateur de commutation en utilisant une première résistance de bouton correspondant au bouton, chaque bouton étant connecté à la seconde extrémité de connexion du premier commutateur de commutation en utilisant une seconde résistance de bouton correspondant au bouton, et la première extrémité fixe du premier commutateur de commutation étant connectée à la première broche fonctionnelle.
  8. Écouteurs selon la revendication 7, le circuit de capteur comprenant un premier capteur et un second capteur, le circuit de commande logique comprenant un dispositif de commande logique, un transistor, et une première résistance, le dispositif de commande logique comprenant une première extrémité d'entrée, une seconde extrémité d'entrée, et une extrémité de sortie logique, la première extrémité d'entrée étant connectée au premier capteur, la seconde extrémité d'entrée étant connectée au second capteur, l'extrémité de sortie logique étant connectée à une extrémité de la première résistance en utilisant le transistor, et l'autre extrémité de la première résistance étant connectée à la première extrémité de connexion du premier commutateur de commutation.
  9. Écouteurs selon la revendication 8, les écouteurs comprenant en outre un circuit de commutation de tension, le circuit de commutation de tension comprenant un commutateur, une première résistance de division de tension, et une seconde résistance de division de tension, la première résistance de division de tension et la seconde résistance de division de tension étant connectées en série, une extrémité de la première résistance de division de tension étant connectée à la première broche fonctionnelle, le commutateur comprenant une extrémité d'entrée, une extrémité de validation et une extrémité de sortie de commutation, l'extrémité d'entrée étant connectée à la première broche fonctionnelle, l'extrémité de validation étant connectée à l'autre extrémité de la première résistance de division de tension, et l'extrémité de sortie de commutation étant connectée au premier capteur, au second capteur et à l'extrémité d'entrée de régulation de tension du régulateur de tension.
  10. Écouteurs selon la revendication 8, le circuit de commande logique comprenant en outre une deuxième résistance, l'extrémité de sortie logique étant en outre connectée à une extrémité de la deuxième résistance en utilisant le transistor, et l'autre extrémité de la deuxième résistance étant connectée à la deuxième extrémité de connexion du premier commutateur de commutation.
  11. Écouteurs selon la revendication 10, les écouteurs comprenant en outre un circuit de charge, le circuit de charge comprenant une batterie et un chargeur, une extrémité de la batterie étant connectée au chargeur, une extrémité d'entrée du chargeur étant connectée à la première broche fonctionnelle, et une extrémité de sortie du chargeur étant connectée au premier capteur, au deuxième capteur, et à l'extrémité d'entrée de régulation de tension du régulateur de tension.
  12. Terminal, comprenant une prise écouteurs, configuré pour se connecter à un connecteur des écouteurs ayant un circuit de capteur, le connecteur des écouteurs comprenant au moins une première broche fonctionnelle et une deuxième broche fonctionnelle, lorsque le connecteur des écouteurs est branché dans la prise écouteurs du terminal, le terminal étant connecté aux écouteurs en utilisant au moins la première broche fonctionnelle et la deuxième broche fonctionnelle du connecteur des écouteurs, et le terminal comprenant en outre un circuit d'alimentation, un circuit d'identification de capteur, un troisième commutateur de commutation, et un circuit de microphone ; le circuit d'alimentation étant configuré pour fournir de l'énergie au circuit de capteur dans les écouteurs,
    le circuit d'identification de capteur étant configuré pour déterminer si un signal de capteur est transmis aux écouteurs ; et
    le troisième commutateur de commutation étant configuré pour commander le terminal pour fournir le circuit de microphone ou le circuit d'alimentation pour les écouteurs.
  13. Terminal selon la revendication 12, le circuit d'alimentation étant connecté au circuit d'identification de capteur ;
    le circuit d'identification de capteur comprenant une résistance d'échantillonnage de courant, un premier convertisseur analogique-numérique et un second convertisseur analogique-numérique, une extrémité de la résistance d'échantillonnage de courant étant connectée au circuit d'alimentation, l'autre extrémité de la résistance d'échantillonnage de courant étant connectée au troisième commutateur de commutation, et le premier convertisseur analogique-numérique et le second convertisseur analogique-numérique étant configurés séparément pour : collecter des tensions aux deux extrémités de la résistance d'échantillonnage de courant, et calculer un courant qui circule à travers la résistance d'échantillonnage de courant ; et
    le circuit de microphone comprenant une résistance d'échantillonnage de tension, un troisième convertisseur analogique-numérique, et un codec, une extrémité de la résistance d'échantillonnage de tension étant connectée au troisième commutateur de commutation, le troisième convertisseur analogique-numérique étant configuré pour collecter une tension à l'extrémité de la résistance d'échantillonnage de tension, et l'autre extrémité de la résistance d'échantillonnage de tension étant connectée au codec.
  14. Terminal selon la revendication 13, le terminal comprenant en outre un circuit audio, et le troisième commutateur de commutation comprenant une cinquième extrémité de connexion, une sixième extrémité de connexion, une septième extrémité de connexion, une huitième extrémité de connexion, une troisième extrémité de commande, une quatrième extrémité de commande, une troisième extrémité fixe, et une quatrième extrémité fixe ;
    la cinquième extrémité de connexion étant connectée au circuit audio, la sixième extrémité de connexion étant connectée à la résistance d'échantillonnage de courant, la troisième extrémité fixe étant connectée à la deuxième broche fonctionnelle, et la troisième extrémité de commande étant configurée pour commander la troisième extrémité fixe afin qu'elle se connecte à la cinquième extrémité de connexion ou à la sixième extrémité de connexion ; et
    la septième extrémité de connexion étant connectée à la résistance d'échantillonnage de tension, la huitième extrémité de connexion étant connectée à la résistance d'échantillonnage de courant, la quatrième extrémité fixe étant connectée à la première broche fonctionnelle, et la quatrième extrémité de commande étant configurée pour commander la quatrième extrémité fixe afin de la connecter à la septième extrémité de connexion ou à la huitième extrémité de connexion.
  15. Terminal selon la revendication 13, le troisième commutateur de commutation comprenant une neuvième extrémité de connexion, une dixième extrémité de connexion, une cinquième extrémité de commande, et une cinquième extrémité fixe ; et
    la neuvième extrémité de connexion étant connectée à la résistance d'échantillonnage de tension, la dixième extrémité de connexion étant connectée à la résistance d'échantillonnage de courant, la cinquième extrémité fixe étant connectée à la première broche fonctionnelle, et la cinquième extrémité de commande étant configurée pour commander la cinquième extrémité fixe afin de la connecter à la neuvième extrémité de connexion ou à la dixième extrémité de connexion.
EP17900145.8A 2017-03-09 2017-07-28 Écouteurs et terminal Active EP3588248B1 (fr)

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CN201710138322 2017-03-09
PCT/CN2017/094980 WO2018161496A1 (fr) 2017-03-09 2017-07-28 Terminal, écouteurs et procédé de commande

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WO2018161496A1 (fr) 2018-09-13
EP3588248A1 (fr) 2020-01-01
US10951973B2 (en) 2021-03-16
CN109313494B (zh) 2021-05-18
US20200236454A1 (en) 2020-07-23
CN109313494A (zh) 2019-02-05

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